If you have issues with your ilok...

[Glazik]

If Pro Tools doesn't start with the infamous message about the lack of ilok or authorization, try this : reset the PRAM of the Mac. Start while pressing Alt + Cmd + P + R, and let your Mac starting three time at least.

http://support.apple.com/kb/ph11243

[snape]

This happens to me fairly often, I have to restart the machine to get it to recognize my iLok, but I will try the PRAM reset trick.... thanks

[Glazik]

Tell me if it solve your issue.

[Dinosound]

I did Reset the Pram (3 times chime) and my iLok2 is still not being seen by my Macbook Pro.

[Chief Technician]

Originally Posted by Dinosound

I did Reset the Pram (3 times chime) and my iLok2 is still not being seen by my Macbook Pro.

Have you installed the latest release of the iLok Licence Manager?